Spring-roll for leather-splitting machines.



No. 727,838- PATENTED MAY 12, 1903.

w. D.IQUIGLEY & J. H. GAY.

SPRING ROLL FOR LEATHER SPLITTING MACHINES. APPLIOATIDNTILED mm: 21, 1902.

Y no MODEL.

INVENTORS BY m THE Noam: PETERs'm, Pnnmuma. WASHINGTON. D. c.

'line 00 0c of Fig. 2.

No. ra ses.

UNTTED STATES PatentedIVIay 12, 1903.

PATENT Prion.

WILLIAM DAVID QUIGLEY, OF NEYVARK, AND JOSEPH HENRY GAY, OF EAST ORANGE, NEYV JERSEY.

SPRING-ROLL FOR LEATHER sPLlTTlNG MACHINES.

SPECIFICATION forming part of Letters Patent No. 727,838, dated. May 12, 1903.

Application filed June 21, 1902.

To all whom it may concern:

Be it known that W6,WILLIAM DAVID QUIG- LEY, of Newark, and JOSEPH HENRY GAY, of East Orange, Essex county, New Jersey, have invented a new and useful Improvement in Spring-Rolls for Leather-Splitting Machines, of which the following is a specification.

Our invention is an improved spring-roll for leather-splitting machines.

Our invention consists in a roll formed of a close spiral of wire, preferably of rectangular cross-section, having a substantially smooth exterior surface; also, in the combination of said spring-roll with a driving-roll and a second roll, between which and said spring-roll the hide passes to the splittingknife.

In the accompanying drawings, Figure 1 represents a portion of our improved roll.

Fig. 2 is a cross-section thereof. Fig. 3 shows an entire roll with its supporting-rod and nuts. Fig. 4 shows the preferable relation of our improved roll to the other rolls usually employed in aleather-splitting machine. Fig. 5 is a section of a portion of a roll on the Figs. 6, 7, and 8 are similar sections representing portions of' rolls made of wire of different cross -sectional shapes.

Similar numbers of reference indicate'like parts.

Our improved roll is formed of a spiral l of wire, as shown in Fig. 1, the turns of the spiral being laid close together, so as to form a substantially smooth cylindrical surface. Through the spiral is inserted a rod 2, threaded at its ends to receive the nuts 3, by which the spiral is secured upon said rod and prevented from elongation. The wire employed should have one side 4'namely, that which forms the outer surface of the spiral-flat. We preferably employa wire of square crosssection, as shown in Fig. 5; but it is obvious that wire of other cross-sections-such as in parallelogram, Fig. 6, or half-round, Fig. 7, or triangular, Fig. 8, may be employed.

The spring-roll 1 may be arranged in the leather-splitting machine, as represented in Fig. 4, in which 5 represents the lower roll, which is solid and elastic and driven in the Serial No. 112,665. (No model.)

direction of the arrow a by any suitable means. With roll 5 the spring-r0111 is held in contact, so that said roll receives motion from roll 5 in the direction of arrow 1). Above roll 1 is the solid'roll 7 and between rolls 7 and 1 is any suitable knife 8. The hide 6 being introduced between rolls 7 and l is by the rotation of roll 1 drawn in between said rolls, so that its edge is presented to the knife and split.

WVe find in practice that the yielding surface of roll 1 easily adapts itself to the small variations in thickness of the hide or to the slight elevations thereon, so that said hide is thus subjected to equal and uniform pressure from said roll in passing between the same and its opposite roll. The spiral being everywhere of uniform diameter and the turns at their outer periphery fitting closely together, the roll does not mark or indent the hide.

We claim 1. A spring-roll for leather-splitting machines formed of a close spiral havinga substantially smooth exterior surface,- substantially as described.

2. A spring-roll for leather-splitting machines fornied of a close spiral of wire of rectangular cross-section; and having a substantially smooth exterior surface, substantially as described.

3. In a leather-splitting machine, the combination of a knife, two rolls adapted to receive the hide between them and present it to the .knife, one of said rolls being formed of a close spiral having a substantially smooth exterior surface, and a driving-roll actuating said spring-roll, substantiallyas described.

4. The combination in a spring-roll for leather-splitting machines, of ashaft, a sleeve of elastic material surrounding said shaft and separated therefrom by an internal annular air-space, and supports on said shaft constructed to retain said sleeve at its extremities.

5. The combination in a spring-roll for leather-splitting machines,of a shaft, a sleeve of elastic material surrounding said shaft and separated therefrom by an internal annular air-space, and clamping devices on said shaft constructed to support said sleeve at its extremities and restrain it from elongation under pressure.

6. The combination in a spring roll for leather-splittingmachines,ofathreaded shaft, a sleeve of elastic material surrounding said shaft and separated therefrom by an internal annular air-space, and nuts on said shaft; the said sleeve being received and supported at its extremities between said nuts.

7. In a leather-splitting machine in combination with a driving-roll of elastic material,

aspring-roll in the form of a continuous helix, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of IS two subscribing Witnesses.

WVILLIAM DAVID QUIGLEY. JOSEPH HENRY GAY.

Witnesses:

WM. H. SIEGMAN, I. A. VAN WART. 

